Dell XPS 13 audio problems? Here's how to get your sound back!

How do I get audio working on my Dell XPS 13?
So your Dell XPS 13's audio is being finicky. It's a common problem, especially the 9343 model, so you're not alone. Plugging in or unplugging headphones sometimes won't register, drivers will sometimes stop working, and Windows 10 updates will sometimes decide to work against you.
There are countless forums across the internet that attempt to fix this problem, most with a different, unproven fix method. Here are some fixes that have helped other XPS 13 users and will hopefully get the audio in your Dell XPS 13 working again.